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Column Driver. FPD93140 Datasheet

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Column Driver. FPD93140 Datasheet
















FPD93140 Driver. Datasheet pdf. Equivalent













Part

FPD93140

Description

528-Ch Small Format a-Si AMLCD Controller / Column Driver



Feature


www.DataSheet4U.com FPD93140 Small Form at a-Si AMLCD Gate Driver with Integrat ed Power Supply ADVANCE INFORMATION Ma y 2003 FPD93140 Small Format a-Si AMLC D Gate Driver with Integrated Power Sup ply General Description The FPD93140 is a Low Power Gate Driver with Power Sup ply for Small Format LCD Displays. The FPD93140 and the companion FPD94128 (Co ntroller / Column .
Manufacture

National Semiconductor

Datasheet
Download FPD93140 Datasheet


National Semiconductor FPD93140

FPD93140; Driver with Integrated Frame Buffer) for m a complete 2-chip solution for drivin g TFT LCD panels containing up to 176RG B X 240 pixels with versatile mounting and scan options. Its function is to dr ive the gates of the LCD active matrix displays and to generate all the supply voltages necessary for display operati on. A shift register activates rows seq uentially in progr.


National Semiconductor FPD93140

ammable sequences based on the external clock. On chip charge pumps require a m inimum number of external capacitores t o generate all the necessary voltages t o power the FPD94128 Column Driver and drive the LCD rows. Under command from the FPD94128 series Column Driver, the FPD93140 can drive from 2 to 240 rows. This allows the use of various display sizes and Partial .


National Semiconductor FPD93140

Display modes to reduce power consumptio n. Features n 241 Outputs Accommodates from 2 to 240 Rows with a dummy row n Bumped Flip Chip Packaging (45um Row Ce nters) n 4 Flexible mounting/scan optio ns provide for symmetric display layout n Wide Supply input range of 2.85V to 5.5V for direct connection to Li-Ion ba ttery n Low Power < 100µA IQ n High Ef ficiency (80%) n On.





Part

FPD93140

Description

528-Ch Small Format a-Si AMLCD Controller / Column Driver



Feature


www.DataSheet4U.com FPD93140 Small Form at a-Si AMLCD Gate Driver with Integrat ed Power Supply ADVANCE INFORMATION Ma y 2003 FPD93140 Small Format a-Si AMLC D Gate Driver with Integrated Power Sup ply General Description The FPD93140 is a Low Power Gate Driver with Power Sup ply for Small Format LCD Displays. The FPD93140 and the companion FPD94128 (Co ntroller / Column .
Manufacture

National Semiconductor

Datasheet
Download FPD93140 Datasheet




 FPD93140
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ADVANCE INFORMATION
May 2003
FPD93140
Small Format a-Si AMLCD Gate Driver with Integrated
Power Supply
General Description
The FPD93140 is a Low Power Gate Driver with Power
Supply for Small Format LCD Displays. The FPD93140 and
the companion FPD94128 (Controller / Column Driver with
Integrated Frame Buffer) form a complete 2-chip solution for
driving TFT LCD panels containing up to 176RGB X 240
pixels with versatile mounting and scan options. Its function
is to drive the gates of the LCD active matrix displays and to
generate all the supply voltages necessary for display op-
eration. A shift register activates rows sequentially in pro-
grammable sequences based on the external clock. On chip
charge pumps require a minimum number of external ca-
pacitores to generate all the necessary voltages to power the
FPD94128 Column Driver and drive the LCD rows.
Under command from the FPD94128 series Column Driver,
the FPD93140 can drive from 2 to 240 rows. This allows the
use of various display sizes and Partial Display modes to
reduce power consumption.
Features
n 241 Outputs Accommodates from 2 to 240 Rows with a
dummy row
n Bumped Flip Chip Packaging (45um Row Centers)
n 4 Flexible mounting/scan options provide for symmetric
display layout
n Wide Supply input range of 2.85V to 5.5V for direct
connection to Li-Ion battery
n Low Power < 100µA IQ
n High Efficiency (80%)
n Onboard Charge Pump Power Supplies:
j+9 to +18V @ 100µA
j-6 to -12V @ 100µA or -9 to -18V @ 100µA
n 3 to 6V @ 1mA Adjustable LCD Volatge
n VCOM driver and adjustable LCD Voltage
n Optional "off-level" modulation in phase with VCOM
Block Diagrams
Typical Application
© 2003 National Semiconductor Corporation DS200730
20073029
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Block Diagrams (Continued)
FPD93140 Block Diagram
20073030
Functional Description
Row Driver
Row output voltages are generated by on chip charge
pumps or can be provided externally. Level Shifters change
low voltage shift register outputs into drive voltages. A pre-
charge scheme reduces power dissipation while driving the
gate line capacitance.
Vertical Start (STV) is sampled on the Rising Edge of CPV
and activates ROW1 immediately. Subsequent rising edges
of CPV shift to the next ROW output. OE- enables each
ROW going high. It can be used to blank ROW outputs while
waiting for columns to settle. Unused rows are skipped by
clocking the STV token through without enabling the Outputs
(Burst Mode).
An optional Row Invert signal (RINV) can be used to modu-
late VN in conjunction with VCOM if the LCD storage capaci-
tor is tied to an adjacent row. This allows the storage cap and
LCD cap to track. RINV should be tied low to disable this
behavior. An additional row output is provided to attach to a
final dummy row if necessary.
Power Supply
A doubler charge pump creates 2xVDD. An externally adjust-
able LDO voltage regulator then creates a voltage VG that is
Ordering Information
external adjustable from 3 to 6V. VG is then tripled and
inverted to create VGH (3xVG) and VGL (-2 or -3xVG) high
and low logic levels for the Row Driver Outputs.
An adjustable voltage regulator creates VLCD. VLCD is
intended to provide the Column Driver (CD) with LCD bias
voltage. VLCD is derived from the VDD or 2xVDD depending
on the their value relative to VLCD to optimize efficiency.
During shutdown the VLCD output is internally switched to
VDD to provide a standby voltage for the Column Driver.
An adjustable voltage regulator creates VCOMA, the VCOM
amplitude voltage. Another adjustable regulator creates
VCOMH the VCOM high level. When used with the AC
Coupling Capacitor a Modulated VCOM voltage can be cre-
ated swinging VCOM between VCOMH and VCOMH-
VCOMA.
A 1X charge pump is used to translate the VCOMA voltage to
the VGL voltage to create ROFFH (VCOMA-VGL) and
ROFFL (VGL).
The Charge Pumps are clocked by the CPV signal so that
quiescent current tracks frame rate.
NSID
FPD93140
FPD94128
Function
Gate Driver
Column Driver (see Datasheet)
Package
COG
COG
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2




 FPD93140
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Notes
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a
significant injury to the user.
2. A critical component is any component of a life
support device or system whose failure to perform
can be reasonably expected to cause the failure of
the life support device or system, or to affect its
safety or effectiveness.
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Support Center
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National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.




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